Hi, I loved Tower Defence games when they first came out. I played alot of them for a long time, ( 3+ years)
I played your game with a open mind, adding sound and graphics in my mind.
Moving the towers when needed was a little awkward, as I wanted to move it close to the road as I could but kept fighting with the RED NOT HERE. Just me, and my opinion on it. I would like it to snap or something to position near the road. Also when you have two roads, I need to know when and where the enys will come from.
Apart from that. Its Tower Defence and I just like them. I look forward to seeing your game grow.